Transmitting means for telegraphic signals.



I. KITSEE.

TRANSMITTING MEANSFOR TELEGRAPHIG SIGNALS. APPLICATION FILED AUG. 24, 1911.

1,097,334, Patented May 19, 1914.

ISIDOR KITSEE, 0F PHILADELPHIA, PENNSYLVANIA.

TRANSMITTING MEANS FOR TEL'EGRAPHIC SIGNALS.

Specification of Eetters-Patent.

Patented May 19,1914.

Application filed August 24, 1911. Serial No. 645,895.

To all whom it may concern I Be it known that I, IsmoR Krrsnn, c1t1- zen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented cer-v tain new and useful Improvements in Trans mitting Means for Telegraphic Signals, of which the following is a specification.

My'invention relates to an improvement in transmitting means for telegraphic sig nals.

My invention may be practised on land lines but its great advantage will be more apparent on lines with great capacity, such as submarine cables. To persons versed in the art it is well known that in submarine telegraphy one impulse, say of positive polaritydenotes a dot and an impulse of'thc same duration and intensity, but of opposite polarity denotes a dash. In automatic sending, great stress has to be laid on perfect signaling and the perforations on the transmitting tape should therefore not only be uniformly spaced but should be in perfect condition. In the production of these perforations it often occurs that the edges of the perforations are torn or otherwise mutilated and it also often happens that with the arrangement of today. the two contacting-pins do not fall straight over the perforations and therefore a shorter contact than required is made.

The object of my invention is to obviate all these difficulties and to produce a contact of the cable with the source of current of always the same duration, no matter f the two contacting parts of the transmitting device are for a shorter or longer time in contact with each other and therefore no matter if the perforations are perfect or partially torn.

To illustrate one form my invention may take, I have recourse to the accompanying drawings Figure 1 is a diagrammatic view of a transmitting arrangement'or organism embodying my invention. Fig. 2 is an en larged' side elevation of the preferred type of contact, but it may be stated that this typeis not a necessity and other types may be substituted there-for to suit requirements.

In Fig. 1, 1 is the cable, 2 and 2 are two polarized relays. The relay 2 comprises the electro-magnetic coils 3, 3, with their poles 4, 4; the armature 5, the stop 6 against which the armature normally rests through the pressure of. the spring 7 and the stop 8 against which the armature is impelled when the cores are energized with the proper p01 larity. The armature 5 is of the type known as the clash-armature, that is, it is provided with means so as to prolong the contact with its forward stop. These means are here shown as the compressible spring 9. In proximity to the head of the, armature is the stop 10. This-stop 10 is for the purpose of limiting the movement of the armature 5 to suit requirements. All three of these stops, 6, 8 andlO are screw-threaded or otherwise adjustable.

The relay 2 is identical with'the relay 2 and similar parts are designated by similar numbers with the addition of the letter a to the various parts.

The cable 1 is connected through Wire 11 with the armature 5 of relay 2 and the stop 6 of this relay is connected through. wire 12 with stop 6 of relay 2 the armature 5 of this relay is connected to-the ground 13; and as the armature5 normally connects with this stop 6, and armature 5*- normally connects with its stop 6*, it is obvious that the cable normally connects directly with the ground 13. The forward stop 8 of the relay'2 connects through wire 14: with the forward stop 8? of relay 2*; the wires 12 and- 14 are connected together through the source of current necessary for the transmission of the pulses over the cable; this source is here shown as 15 and should consist of the required number of individual cells or other sources of required voltage.

20 is the automatic transmitting arrangement as an entirety. In this arrangement .21 is the paper provided with two series of perforations 22 and 23. 24'and 25 are two contacting devices adapted to contact through one or theother ofsaid perforations with. the contact 26, here shown'in the shape.

of a roller and provided here with} the brush."

27. 28 is a source of current.*-*29 and 29* are two converters or inductoriums; the converter '29 comprising the primary 30 and the secondary 31, and the converter 29 co1n-'v prising the primary .30 and the secondary 31. The primaries 30 and 30 are connected together with-* one terminal and to this point of connection the source of current 28 is also connected. The secondary 31 is connected to the terminals of the coil of relayrjgf2,

too

and the secondary 31' is'i-gconnected terminals of the coil of relay .2.

The relays 2 and 2 are of a polarity so that when through the closing of their circuits a current will flow in the direction of the unfeathered arrow, inducing thereby in the secondary an impulse in the direction of the feathered arrow, their armatures will he moved from their respective resting places toward and in contact with their respective forward stops; but when through the breaking of the circuit a pulse of opposite flow is induced in the secondaries, the armatures will remain or come to rest.

The mode of operation is as follows Normally, that is, when both, the contact 24 as well as the contact 25, rests on the paper, both the armatures-5 and 5 will rest against their respective stops 6 and 6 and the cable 1 will, as stated before, be in direct contact with the ground 13, it being taken for granted that the upper row of perforations designates dots and should he therefore used for impressing positive pulses on the cable and the lower row of perforations designates dashes and should be therefore used for impressing negative pulses on the cable. It is now supposed that through the moving of the paper 21 the contact 24: comes in alinement with one of the perforations 22 and makes connection with the roller 26 thereby closing a circuit including the primary 30 and the source of current 28. The closing of this circuit will result in a current flow in the direction of the unfeathered arrow through this primary, thereby inducing a pulse in the secondary 31 flowing in the direction of the feathered arrow, and as the relay is of the required polarity, the armature 5 will be drawn from the stop 6 toward and in contact withthe stop 8; but as this pulse is only momentary the contact of the armature with its forward stop would be of a duration too short forrthe practical working of a cable, and to obviate this diliiculty I have provided this armature with the spring 9 so as to prolong the contact. The stop l0 which, as said above, is also adjustable, is brought intoaction so as to make the contact between 8? and 95in accordance with requirements. When the stop 10 is moved forward toward the armature the contact between the spring 9 and the contact 8 will be shortened and when the contact 10 is moved away from the armature then 8 and 9 are allowed to contact for a longer time. In this operation it is immaterial what shape or diameter the perforations may have, if the same are perfect or torn, because the commencement of the flow of the current willinduce a pulse in the secondary and it does not matter how short or long this flow through the primary is, the length of the secondary pulse will not be affected. Through the moving of the armature 5 from its stop tionof the cable 1 with the ground 13 is 6 the direct conned broken; but the making of the contact between the armature 5 and the forward stop 8 produces a new connection for the cable; this time through the source of current 15 and the circuit will consists of cable 1, wire 11, armature 5, of relay 2, stop 6, wire 12, positive pole of source 15, wire 14, connected to the negative pole of said source, forward stop '8 of relay 2*, armature 5 and ground 18. When now, in the course of operation the contact 25 comes in alinement with one of the perforations 23, then a circuit ises- 'tablished including the primary 30 and the current will flow through this primary in the direction of the unfeathered arrow inducing a pulse in the secondary in the direction of the feathered arrow, and as this relay is also of the required polarity the armature 5 will be drawn from its resting place 6 and toward and in contact with the stop 8. The moving of the armature from the stop 6 will also break the direct contact of the cable with the ground 13, and the con tacting of 8 with the armature through its spring 9 will make a circuit including the source of current 15, and this circuit will consist of the following elements: cable 1, wire 11, armature 5, with its spring 9, forward stop 8, negative pole of the source of current 15, stop 6 of relay 2 armature 5 and ground 13; and the negative pulse will be impressed uponthe cable. It is therefore seen that the connection of the contact 2% with the contact-roller 26, will result therein that a positive impulse is transmitted over the cable andthe connection of the contact 25 with the roller 26 will result therein that a negative impulse is transmitted over the cable; and the arrangement of the relays will have the effect that these impulses are of the required duration and independent of the shape and diameter or perfection of the perforations.

In Fig. 2, 24 is the contacting device well adapted for the purpose in question, but, as said above, any suitab 1. device may be substituted therefor.

I have described and illustrated my invention as applied to a lineof transmission-,submarine cable, which requires the 5 impressing upon the line of bothv polarities necessitating the employment of two relays, but as this my invention may also be practised on land lines, over which a message is transmitted with the aid of one polarity it is obvious that only one polarized relay need be employed.

Having now described my invention, what I claim as new and desire to secure by Letters Patent is 1. In telegraphy, a transmitting arrangement comprising an inductorium, a perforated paper, means to make, through said perforations an electric circuit including the primary of said inductorium, a polarized 130 electro-magnet, the coils thereof connected to the secondary of said inductorium, a source of current, a line of transmission, means" for said electro-magnet to connect said line of transmission through said source with the returnconductor or ground and means for said electro-magnet to vary the duration of connection in accordance with the will of the operator.

2. In a device-z of the class described, a perforated r means to make aZ'circuit g p through sai perforations, means to develop.

an induced pulse through the making of said circuit, a lme of transmission, a source of current, and electro-magnetic means to connect said line of transmission to the source of current fora redetermined eriod independent of the s ze of the per orations.

' 3. In a device of the class described, two polarized relays, two inductoriums, the secondaries connected to the polarized relays, and means to make and break a circuit in accordance with the signals to be transmitted, said means connected to the inducto-- rium primaries.

4. In a device'of the class described, the following instrumentalities: a line of transmission, a source of current, two polarized relays, two inductoriums, and means to make and break the circuit of the line of transmission in accordance with the signals to be transmitted, all of said instrumentalities operatively related to each other.

5. In anautomatic tele raphic transmitter, means to impress required pulses of pre-, determined'duration on a line of transmisof said secondaries,.- a source 0 sion, said means comprising two electromagnets, two inductoriumsfor same, means to energize the primaries of said-inductoriums in accordance with the signals to be transmitted, said electro-magnets provided 7 with means to increase or decrease the contact of their armatures with their forward stops in accordance with the will of the'operator independent of the duration of the pulse actuating said 'armatures.

. 6. In telegraphy, in combination with a line of transm ssion, an automatic transthe armature of one or the other of said re-- lays, one. or the other of thexpoles of said source ,with the line oftransmission, and means for each of said annatures to va the duration of said connection in accor ance with the will of the operator. In'testimon whereof I aflix my signature in presence 0 two witnesses.

ISIDOR KITSEE. Witnesses:

ALVAH Rn'rENHoUsn, -Enrrn R. Smut. 

